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Overview
| Comment: | Fix gcc gripe about parens in a ||/&& in mergePosList(). Drop unused pBlob/nBlob in index_insert_term(). Fix NULL deref in an assertion in docListUpdate() delete case. Minor code tightening in docListUpdate(). (CVS 3367) |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | a6fcf9101a831bf5f129c6045eabf303 |
| User & Date: | shess 2006-08-25 19:20:26 |
Context
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2006-08-25
| ||
| 23:42 | Add support for INSERT INTO ... DEFAULT VALUES. Tickets #299, #1940. (CVS 3368) check-in: bc84cb54 user: drh tags: trunk | |
| 19:20 | Fix gcc gripe about parens in a ||/&& in mergePosList(). Drop unused pBlob/nBlob in index_insert_term(). Fix NULL deref in an assertion in docListUpdate() delete case. Minor code tightening in docListUpdate(). (CVS 3367) check-in: a6fcf910 user: shess tags: trunk | |
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2006-08-24
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| 15:18 | Documentation updates for the new SQLITE_FUNCTION authorization. (CVS 3366) check-in: e029637e user: drh tags: trunk | |
Changes
Changes to ext/fts1/fulltext.c.
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* otherwise pUpdate, which must contain only the single docid [iDocid], is
* inserted (if not present) or updated (if already present). */
static int docListUpdate(DocList *d, sqlite_int64 iDocid, DocList *pUpdate){
int modified = 0;
DocListReader reader;
char *p;
assert( d->iType==pUpdate->iType);
if( pUpdate!=NULL ){
assert( iDocid==firstDocid(pUpdate) );
}
readerInit(&reader, d);
while( !readerAtEnd(&reader) ){
if( peekDocid(&reader) >= iDocid ) break;
skipDocument(&reader);
}
p = reader.p;
/* Delete if there is a matching element. */
if( !readerAtEnd(&reader) && iDocid==peekDocid(&reader) ){
skipDocument(&reader);
................................................................................
memmove(p, reader.p, docListEnd(d) - reader.p);
d->nData -= (reader.p - p);
modified = 1;
}
/* Insert if indicated. */
if( pUpdate!=NULL ){
int iDoclist;
int nNeed;
docListAddEndPos(pUpdate);
nNeed = pUpdate->nData;
iDoclist = p - d->pData;
d->pData = realloc(d->pData, d->nData+nNeed);
p = d->pData + iDoclist;
memmove(p+nNeed, p, docListEnd(d) - p);
memcpy(p, pUpdate->pData, nNeed);
p += nNeed;
d->nData += nNeed;
modified = 1;
}
return modified;
}
/* Split the second half of doclist d into a separate doclist d2. Returns 1
................................................................................
match = 1;
}
if( m->pOut->iType >= DL_POSITIONS ){
docListAddPos(m->pOut, in_pos);
}
block_pos = readPosition(pBlockReader);
in_pos = readPosition(&m->in);
} else if( in_pos==-1 || block_pos!=-1 && block_pos-m->iOffset<in_pos ){
block_pos = readPosition(pBlockReader);
} else {
in_pos = readPosition(&m->in);
}
}
if( m->pOut->iType >= DL_POSITIONS && match ){
docListAddEndPos(m->pOut);
................................................................................
}
/* Update the %_terms table to map the term [zTerm] to the given rowid. */
static int index_insert_term(fulltext_vtab *v, const char *zTerm, int nTerm,
sqlite_int64 iDocid, DocList *p){
sqlite_int64 iFirst;
sqlite_int64 iIndexRow;
DocList doclist;
char *pBlob = NULL;
int nBlob = 0;
int rc = term_chunk_select(v, zTerm, nTerm, iDocid, &iFirst);
if( rc==SQLITE_DONE ){
docListInit(&doclist, DL_POSITIONS_OFFSETS, 0, 0);
if( docListUpdate(&doclist, iDocid, p) ){
rc = term_insert(v, zTerm, nTerm, iDocid, &doclist);
docListDestroy(&doclist);
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< > | < | < < < | | | < | | < < |
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* otherwise pUpdate, which must contain only the single docid [iDocid], is
* inserted (if not present) or updated (if already present). */
static int docListUpdate(DocList *d, sqlite_int64 iDocid, DocList *pUpdate){
int modified = 0;
DocListReader reader;
char *p;
if( pUpdate!=NULL ){
assert( d->iType==pUpdate->iType);
assert( iDocid==firstDocid(pUpdate) );
}
readerInit(&reader, d);
while( !readerAtEnd(&reader) && peekDocid(&reader)<iDocid ){
skipDocument(&reader);
}
p = reader.p;
/* Delete if there is a matching element. */
if( !readerAtEnd(&reader) && iDocid==peekDocid(&reader) ){
skipDocument(&reader);
................................................................................
memmove(p, reader.p, docListEnd(d) - reader.p);
d->nData -= (reader.p - p);
modified = 1;
}
/* Insert if indicated. */
if( pUpdate!=NULL ){
int iDoclist = p-d->pData;
docListAddEndPos(pUpdate);
d->pData = realloc(d->pData, d->nData+pUpdate->nData);
p = d->pData + iDoclist;
memmove(p+pUpdate->nData, p, docListEnd(d) - p);
memcpy(p, pUpdate->pData, pUpdate->nData);
d->nData += pUpdate->nData;
modified = 1;
}
return modified;
}
/* Split the second half of doclist d into a separate doclist d2. Returns 1
................................................................................
match = 1;
}
if( m->pOut->iType >= DL_POSITIONS ){
docListAddPos(m->pOut, in_pos);
}
block_pos = readPosition(pBlockReader);
in_pos = readPosition(&m->in);
} else if( in_pos==-1 || (block_pos!=-1 && block_pos-m->iOffset<in_pos) ){
block_pos = readPosition(pBlockReader);
} else {
in_pos = readPosition(&m->in);
}
}
if( m->pOut->iType >= DL_POSITIONS && match ){
docListAddEndPos(m->pOut);
................................................................................
}
/* Update the %_terms table to map the term [zTerm] to the given rowid. */
static int index_insert_term(fulltext_vtab *v, const char *zTerm, int nTerm,
sqlite_int64 iDocid, DocList *p){
sqlite_int64 iFirst;
sqlite_int64 iIndexRow;
DocList doclist;
int rc = term_chunk_select(v, zTerm, nTerm, iDocid, &iFirst);
if( rc==SQLITE_DONE ){
docListInit(&doclist, DL_POSITIONS_OFFSETS, 0, 0);
if( docListUpdate(&doclist, iDocid, p) ){
rc = term_insert(v, zTerm, nTerm, iDocid, &doclist);
docListDestroy(&doclist);
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